Thaumaturgy expands Torchlight's Gem Transmutation system by adding 90 new recipes, enabling players to convert gems from types that they do not want into types that they do. Place four different gems of the same grade into the Transmuter, and if they are a valid combination, you will get a gem of the next grade of an entirely different type. Consult the following image to figure out what formulae will work:
Spoiler: show
If you find any bugs or have any questions, I would be glad to help.
I have fixed a significant bug in this mod. However, due to the nature of the bug, the fix is in another mod. Find more information here: viewtopic.php?f=20&t=10213
TorchLit.net: Here
Runic Games Fansite: Here
